NO. 3557 SUBGENUS CULEX—BRAM 63 
External process gradually tapering to a blunt tip; exceeding the 
ventral cornu in length. Ventral cornu dentiform, similar in size 
and shape to the teeth of the median process. Median process with 
seven to 10 distinct teeth. Basal process short, straight, and tapering 
to a point. 
Larva: Antennal tuft located in a constriction near the outer 
third; the basal portion of the antennal shaft spiculate. Postclypeal 
head hair 4 short, single; upper frontal head hair 5 long, four to seven 
branched; lower frontal head hair 6 long, three or four branched; 
preantennal head hair 7 long, multiple. Mentum with approximately 
16 subequal teeth. Comb with many scales in a patch; each scale 
long, broad, and fringed apically with subequal spinules. Siphonal 
index 6.0 to 7.0; five pairs of small two to four branched siphonal 
tufts inserted beyond the pecten. Pecten with 11 to 20 teeth on the 
basal fourth of the siphon; each tooth with three to four coarse barbs 
on one side. Anal segment completely ringed by the saddle; gills 
usually about as long as the saddle. 
MATERIAL EXAMINED.—Five male specimens and their associated 
terminalia from Mexico, one from Panama, two from Colombia, and 
a large series from the United States. 
Distripution.—Carpenter and LaCasse (1955) reported this species 
from California, Idaho, and Utah. It has also been reported from 
Mexico. ‘The author has seen specimens in the U.S. National Museum 
collection from Panama and Colombia. 
Culex (Culex) finlayi Perez Vigueras, 1956 
FIGuREs 16c, d 
Culex (Culex) finlayi Perez Vigueras, 1956, p. 382. 
Systematics.—This species differs from all other members of the 
subgenus by the characteristic shape of the median process of the 
mesosome. 
SALIENT CHARACTERS.—Adult female: See table 1. 
Male terminalia: Basistyle conical, slightly longer than twice the 
basal width; clothed with fine setae in addition to normal, long setal 
pattern. Apical lobe of the basistyle prominent and also clothed 
with fine setae. Appendicles of the apical lobe as follows: three 
subequal hooked rods: a small, bluntly rounded leaf: a narrow, gently 
curved seta. Dististyle normal. Tenth sternite crowned with a 
dense tuft of short, pointed spines apically and spatulate, scalelike 
spines on the lateral outer margins: basal arm moderate in length, 
prominently curved; two cercal setae present. External process very 
broad, gently curved so that the tip is pointed laterally. Ventral 
cornu serrate. Median process projected into a strong extension 
